I have been playing Xbox through VGA cables for the past year or so, and a few months ago I turn on my Xbox and download the update and my console restarts but doesn't display video or play audio. The Xbox will turn on and register any controllers connected, but will not display video or play audio. I figured it was the cables and bought new ones, but this did not solve my issue. I tried my old component cables on my TV, and it works just fine!
Thanks in advance for any help!